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Optimize LineChart area fill rendering to avoid data duplication


PR created automatically by Jules for task 14465805294615331269 started by @shai-almog

Refactored `LineChart` to draw filled areas by constructing the `GeneralPath` directly from the source points list, rather than creating a temporary `ArrayList` copy. This reduces memory allocation and garbage collection overhead during chart rendering.
Exposed `AbstractChart.calculateDrawPoints` as protected to facilitate this reuse.
Retained original logic for complex `BOUNDS` fill types where point modification is required.
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✅ Continuous Quality Report

Test & Coverage

Static Analysis

Generated automatically by the PR CI workflow.

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shai-almog commented Dec 17, 2025

Android screenshot updates

Compared 30 screenshots: 28 matched, 2 updated.

  • MediaPlayback — updated screenshot. Screenshot differs (320x616 px, bit depth 8).

    MediaPlayback
    Preview info: JPEG preview quality 70; JPEG preview quality 70.
    Full-resolution PNG saved as MediaPlayback.png in workflow artifacts.

  • landscape — updated screenshot. Screenshot differs (640x296 px, bit depth 8).

    landscape
    Preview info: Preview provided by instrumentation.
    Full-resolution PNG saved as landscape.png in workflow artifacts.

Native Android coverage

  • 📊 Line coverage: 25.08% (2675/10665 lines covered) [HTML preview] (artifact android-coverage-report, jacocoAndroidReport/html/index.html)
    • Other counters: instruction 24.63% (12396/50325), branch 15.49% (718/4636), complexity 17.52% (739/4218), method 32.89% (597/1815), class 34.98% (106/303)
    • Lowest covered classes
      • com.codename1.impl.android.com.codename1.impl.android.AndroidContactsManager – 0.00% (0/398 lines covered)
      • com.codename1.impl.android.com.codename1.impl.android.AndroidImplementation$Video – 0.00% (0/168 lines covered)
      • com.codename1.impl.android.com.codename1.impl.android.IntentIntegrator – 0.00% (0/139 lines covered)
      • com.codename1.impl.android.util.com.codename1.impl.android.util.Base64 – 0.00% (0/117 lines covered)
      • com.codename1.impl.android.com.codename1.impl.android.AndroidImplementation$SocketImpl – 0.00% (0/77 lines covered)
      • com.codename1.impl.android.com.codename1.impl.android.AndroidTextureView – 0.00% (0/76 lines covered)
      • com.codename1.impl.android.com.codename1.impl.android.AndroidSurfaceView – 0.00% (0/73 lines covered)
      • com.codename1.impl.android.com.codename1.impl.android.LocalNotificationPublisher – 0.00% (0/65 lines covered)
      • com.codename1.impl.android.com.codename1.impl.android.FridaDetectionUtil – 0.00% (0/64 lines covered)
      • com.codename1.impl.android.com.codename1.impl.android.AndroidDB – 0.00% (0/57 lines covered)

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shai-almog commented Dec 17, 2025

iOS screenshot updates

Compared 30 screenshots: 27 matched, 2 updated, 1 missing reference.

  • BrowserComponent — updated screenshot. Screenshot differs (1206x2622 px, bit depth 8).

    BrowserComponent
    Preview info: Preview provided by instrumentation.
    Full-resolution PNG saved as BrowserComponent.png in workflow artifacts.

  • graphics-draw-gradient — updated screenshot. Screenshot differs (1206x2622 px, bit depth 8).

    graphics-draw-gradient
    Preview info: JPEG preview quality 10; JPEG preview quality 10; downscaled to 844x1835.
    Full-resolution PNG saved as graphics-draw-gradient.png in workflow artifacts.

  • graphics-draw-round-rect — missing reference. Reference screenshot missing at /Users/runner/work/CodenameOne/CodenameOne/scripts/ios/screenshots/graphics-draw-round-rect.png.

    graphics-draw-round-rect
    Preview info: JPEG preview quality 10; JPEG preview quality 10; downscaled to 844x1835.
    Full-resolution PNG saved as graphics-draw-round-rect.png in workflow artifacts.

Benchmark Results

  • VM Translation Time: 358 seconds
  • Compilation Time: 81 seconds

@shai-almog shai-almog marked this pull request as ready for review December 17, 2025 10:07
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@shai-almog shai-almog merged commit 24e5388 into master Dec 17, 2025
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2 participants